v0.5.1

What's Changed

• add xiao settings smart-wash [on|off] for the X20+ smart mop washing toggle
• map MIoT vacuum-extend boolean siid 4 piid 34 in the cloud service
• include smart_wash in the dashboard /api/settings snapshot for programmatic consumers

Research Highlights

• official xiaomi.vacuum.c102gl MIoT spec exposes smart-wash-switch under vacuum-extend
• adjacent X20+ ecosystem work still leans on cloud MIoT control, so another spec-backed boolean toggle is low risk

Verification

• pytest tests/ -v
• ruff check src/ tests/
• ruff format --check src/ tests/
• mypy src/xiao/